Winding core



FIG. 1 is a perspective view of a first embodiment of the winding core;

FIG. 2 is a front view thereof;

FIG. 3 is a plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a sectional view thereof taken at 6-6 of FIG. 3;

FIG. 7 is a reference view thereof showing the actual use;

FIG. 8 is a perspective view of a second embodiment of the winding core;

FIG. 9 is a front view thereof;

FIG. 10 is a plan view thereof;

FIG. 11 is a bottom view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a sectional view thereof taken at 13-13 of FIG. 10;

FIG. 14 is a reference view thereof showing the actual use;

FIG. 15 is a perspective view of a third embodiment of the winding core;

FIG. 16 is a front view thereof;

FIG. 17 is a plan view thereof;

FIG. 18 is a bottom view thereof;

FIG. 19 is a right side view thereof;

FIG. 20 is a sectional view thereof taken at 20-20 of FIG. 17; and,

FIG. 21 is a reference view thereof showing the actual use.

The portions shown in broken lines do not form part of the claimed design. 

The ornamental design for a winding core, as shown and described. 